Gmail's spam filter is good, but not perfect. If you've got a sneaking suspicion there might be a false positive, shoulda-seen-it email trapped in your Spam bin, the Digital Inspiration blog suggests a quick search to find it.

Using a combination of Gmail's search operators and "OR" combinations, Amit Agarwal suggests a quick search that runs through your Gmail spam to find any messages directly addressed to you that don't start with "DEAR SIR/MADAM." Head up to the search bar (or tap the / shortcut) and enter a personalized version of this string: